成人爽A毛片免费啪啪,午夜香吻高清观看视频在线,狠狠挺进稚嫩学生小身体,无码成人性爽XO视频在线观看

濟(jì)南精美塑料包裝廠為您提供塑料袋、方便袋、塑料袋、食品塑料袋,相關(guān)信息發(fā)布和資訊展示,敬請(qǐng)關(guān)注!

濟(jì)南歷下精美塑料包裝廠

服務(wù)熱線: 18764138233

熱門:
常見問題
當(dāng)前位置:首頁-新聞資訊-常見問題

常見檢測(cè)自封袋密封性方法

來源:http://wujikeji.com/ 日期:2024-03-25

自封袋雖然非常方便,但是密封性能也很重要。在設(shè)計(jì)自封袋時(shí),需要充分考慮每層材料的性能和厚度,以獲得足夠的阻隔性能。檢測(cè)自封袋密封性能的常用方法有三種

Although self sealing bags are very convenient, sealing performance is also important. When designing self sealing bags, it is necessary to fully consider the performance and thickness of each layer of material to achieve sufficient barrier performance. There are three common methods for testing the sealing performance of self sealing bags

無水浸泡法。

Anhydrous soaking method.

自封袋通常適用于外層材料性能在水的作用下在測(cè)試過程中會(huì)明顯下降的包裝,如外層為紙質(zhì)材料的包裝。

Self sealing bags are usually suitable for packaging where the performance of the outer layer material will significantly decrease during the testing process under the action of water, such as packaging with paper material as the outer layer.

用試液(如與濾紙有明顯色差的有色水溶液)填充樣品,密封后將樣品放在濾紙上,觀察試液從樣品內(nèi)到外的滲漏情況。應(yīng)該從兩方面來衡量。也可以放在真空室中,在負(fù)壓下測(cè)試。

Fill the sample with a test solution (such as a colored aqueous solution with a significant color difference from the filter paper), seal it, and place the sample on the filter paper to observe the leakage of the test solution from the inside out of the sample. It should be measured from two aspects. It can also be placed in a vacuum chamber and tested under negative pressure.

20230630034312402.jpg

二、真空觀察法。

2、 Vacuum observation method.

自封袋的適用材料同上。通過抽真空,產(chǎn)生樣品內(nèi)部和外部的壓力差,觀察膨脹和釋放真空后樣品形狀的恢復(fù),判斷樣品的密封性能。

The applicable materials for self sealing bags are the same as above. By vacuuming, a pressure difference is generated between the inside and outside of the sample, and the shape recovery of the sample after expansion and vacuum release is observed to determine the sealing performance of the sample.

第三,城市壓在水里。

Thirdly, the city is submerged in water.

自封袋通常適用于外層材料性能在水的作用下在試驗(yàn)過程中不會(huì)明顯下降的包裝,如外層采用塑料薄膜的包裝。通過對(duì)真空室抽真空,產(chǎn)生浸入水中的樣品內(nèi)部和外部的壓力差,觀察樣品中的氣體逸出或水分滲入,測(cè)量樣品的密封性能。測(cè)量密封性能常用的手段是具有真實(shí)速率的測(cè)試裝置。

Self sealing bags are usually suitable for packaging where the performance of the outer layer material will not significantly decrease during the testing process under the action of water, such as packaging with plastic film on the outer layer. By vacuuming the vacuum chamber, the pressure difference between the inside and outside of the sample immersed in water is generated, and the gas escape or water infiltration in the sample is observed to measure the sealing performance of the sample. The commonly used method for measuring sealing performance is a testing device with a true rate.

目前市場(chǎng)上很多商品都存在產(chǎn)品質(zhì)量問題,總有窮店為了更好地實(shí)現(xiàn)目標(biāo)而鋌而走險(xiǎn)。因此,我們?cè)谫徺I自密封袋時(shí)要特別注意,自密封袋因其方便易用而被廣泛應(yīng)用于食品等各個(gè)領(lǐng)域。很多人會(huì)問如何辨別自封袋是否有害。

At present, many products in the market have quality issues, and there are always poor stores taking risks to better achieve their goals. Therefore, we should pay special attention when purchasing self sealing bags, as they are widely used in various fields such as food due to their convenience and ease of use. Many people ask how to distinguish whether self sealing bags are harmful.

用雙眼看。

Look with both eyes.

包裝袋為白色、全透明或微全透明,材質(zhì)勻稱。有害密封包裝袋為彩色或白色,但透明度和濁度較弱。塑料表層拉伸不均勻,含有小顆粒。

The non-toxic packaging bag is white, fully transparent or slightly fully transparent, with a uniform material. Harmful sealed packaging bags are colored or white, but have weak transparency and turbidity. The plastic surface is unevenly stretched and contains small particles.

聽聽你的耳朵。

Listen to your ears.

當(dāng)用力搖晃包裝袋時(shí),會(huì)發(fā)出清晰的聲音,表明是包裝袋。而低噪音是有害的包裝袋。

When vigorously shaking the packaging bag, a clear sound will be emitted, indicating that it is a non-toxic packaging bag. Low noise is a harmful packaging bag.

本文由濟(jì)南塑料袋訂做提供技術(shù)支持,更多的詳細(xì)精彩內(nèi)容請(qǐng)點(diǎn)擊我們的網(wǎng)站http://wujikeji.com我們將會(huì)全心全意為您提供滿意的服務(wù)。

This article provides technical support for customized plastic bags in Jinan. For more detailed and exciting content, please click on our website http://wujikeji.com We will wholeheartedly provide you with satisfactory service.

爆乳2把你榨干哦OVA在线观看| 人妻丰满熟妇AV无码区免| 亚洲AV无码无在线观看红杏| 亚洲av综合色区无码专区桃色| 精品国产AⅤ无码一区二区| 最近中文字幕视频2019一页| 人妻少妇一区二区三区| 体育生翘臀公0被猛攻GΑY| 中文字幕精品久久久乱码乱码| 欧美久久久无码精品亚洲日韩小说| 极品YIN荡人妻合集H| 久久久精品中文字幕麻豆发布| 粗大黑人巨精大战欧美成人免费看| 粉粉嫩嫩是AABB| 狠狠躁夜夜躁人人爽| 麻豆人妻无码性色AV专区 | 狠狠躁18三区二区一区| 亚洲熟妇AV日韩熟妇在线| 男女做爰吃奶猛烈叫床视频电影| 久久人人爽人人爽人人片AV高清 | 97人人爽人人爽人人人片AV | 无码人妻精品一区二区蜜桃在线看 | 被两个按摩师用春药按摩| 6080YYY午夜理论片中无码| 成人电影免费看| 嫩模被强到高潮呻吟不断| 狠狠色噜噜狠狠亚洲AV| A级毛片无码免费真人久久| 被黑人强到高潮喷水A片| 亚洲AV无码一区二区一二区| 欧美AV噜噜狠狠网址蜜桃| 又色又爽又黄又粗暴的小说| 亚洲AV中文无码乱人伦在线咪咕| 秘书在办公室被躁到高潮| 免费观看丰满少妇做受| 老师含着我的奶边摸边做 | 又粗又爽高潮午夜免费视频 | 亚洲区色情区激情区小说色情书 | 中文在线无码高潮潮喷| 野花视频在线观看免费| 国产农妇精品xxx|